/* ==========================================================================
   M2C2 — minimal theme
   Palette sampled from the M2C2 logo:
     navy   #192943  (primary text, footer)
     purple #866AFB  (accent, links, highlights)
   ========================================================================== */

:root {
  --navy: #192943;
  --purple: #866AFB;
  --purple-soft: #EFEBFE;
  --ink: #192943;
  --ink-soft: #4d5a75;
  --line: #e6e9f0;
  --bg: #ffffff;
  --bg-alt: #f7f8fb;
  --max-width: 920px;
  --font-head: "Poppins", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
}

/* ---------- header / nav ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--navy);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.nav-brand img { height: 30px; width: auto; }

.nav-brand .c2 { color: var(--purple); }

.nav-links {
  margin-left: auto;
  display: flex;
  gap: 1.75rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}

.nav-links a:hover { color: var(--navy); }

.nav-links a.active {
  color: var(--navy);
  border-bottom-color: var(--purple);
}

/* ---------- layout ---------- */

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
}

section { margin-top: 3.5rem; }

h1, h2, h3 {
  font-family: var(--font-head);
  color: var(--navy);
  line-height: 1.25;
}

h1 { font-size: 2rem; font-weight: 700; margin: 0 0 1rem; }
h2 { font-size: 1.4rem; font-weight: 700; margin: 0 0 1rem; }
h3 { font-size: 1.05rem; font-weight: 600; margin: 1.5rem 0 0.5rem; }

p { margin: 0 0 1rem; color: var(--ink-soft); }

a { color: var(--purple); }

.kicker {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--purple);
  margin-bottom: 0.5rem;
}

/* ---------- home hero ---------- */

.hero {
  text-align: center;
  padding: 4.5rem 0 1rem;
}

.hero img.logo {
  width: min(480px, 86%);
  height: auto;
  margin-bottom: 2.25rem;
}

.hero .tagline {
  max-width: 620px;
  margin: 0 auto;
  font-size: 1.2rem;
  line-height: 1.65;
  color: var(--ink);
}

/* ---------- goal cards ---------- */

.goals {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.goal {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.4rem 1.5rem;
  background: var(--bg);
}

.goal .num {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--purple);
  letter-spacing: 0.1em;
}

.goal h3 { margin: 0.35rem 0 0.4rem; }
.goal p { margin: 0; font-size: 0.95rem; }

/* ---------- notices / cards ---------- */

.notice {
  background: var(--purple-soft);
  border-radius: 10px;
  padding: 1.4rem 1.6rem;
  margin: 1.5rem 0;
}

.notice p { margin: 0; color: var(--navy); }

/* ---------- past workshops list ---------- */

.event-list { list-style: none; margin: 1.5rem 0 0; padding: 0; }

.event-list li {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  padding: 0.85rem 0.25rem;
  border-bottom: 1px solid var(--line);
}

.event-list li:first-child { border-top: 1px solid var(--line); }

.event-list .year {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--purple);
  flex: 0 0 3.2rem;
}

.event-list .host { color: var(--ink); flex: 1; }

.event-list .program {
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  text-decoration: none;
}
.event-list .program:hover { text-decoration: underline; }

/* ---------- tabs (network) ---------- */

.tabs {
  display: flex;
  gap: 0.5rem;
  margin: 2rem 0 2.25rem;
  border-bottom: 1px solid var(--line);
}

.tab {
  appearance: none;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  padding: 0.6rem 1rem;
  font-family: var(--font-head);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ink-soft);
  cursor: pointer;
}

.tab:hover { color: var(--navy); }

.tab.active {
  color: var(--navy);
  border-bottom-color: var(--purple);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ---------- people ---------- */

.people-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.person-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.5rem;
  text-align: center;
}

.person-card .avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--purple-soft);
  color: var(--purple);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 0.9rem;
}

.person-card img.photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  margin: 0 auto 0.9rem;
}

.person-card.fellow { padding: 1.2rem 1rem; }
.person-card.fellow img.photo, .person-card.fellow .avatar { width: 96px; height: 96px; }
.person-card.fellow h3 a.site-link {
  color: var(--purple);
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
}
.person-card.fellow h3 a.site-link .ext { font-size: 0.7em; margin-left: 0.3em; vertical-align: 0.15em; }
.person-card.fellow h3 a.site-link:hover { color: var(--navy); }
.person-card .photo-link { display: block; width: fit-content; margin: 0 auto; border-radius: 50%; }
.person-card .photo-link img.photo { transition: transform 0.15s ease, box-shadow 0.15s ease; }
.person-card .photo-link:hover img.photo { transform: scale(1.04); box-shadow: 0 0 0 3px var(--purple-soft), 0 0 0 5px var(--purple); }
.person-card .visit { font-size: 0.8rem; margin-top: 0.4rem; }

.person-card h3 { margin: 0 0 0.2rem; }
.person-card p { margin: 0; font-size: 0.92rem; }
.person-card .email { font-size: 0.85rem; }
.person-card .then { font-size: 0.78rem; color: var(--ink-soft); opacity: 0.8; margin-top: 0.25rem; }

/* participants table */

table.participants {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

table.participants th {
  text-align: left;
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border-bottom: 2px solid var(--line);
  padding: 0.5rem 0.75rem;
}

table.participants td {
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

table.participants td.events { color: var(--ink-soft); font-size: 0.88rem; }

.role-pill {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--purple);
  background: var(--purple-soft);
  border-radius: 99px;
  padding: 0.1rem 0.6rem;
  white-space: nowrap;
}

/* fellows */

.cohort { margin-bottom: 2rem; }

.cohort h3 { margin-bottom: 0.75rem; }

.cohort .people-grid { grid-template-columns: repeat(3, 1fr); }

.data-status { font-size: 0.9rem; color: var(--ink-soft); font-style: italic; }

/* ---------- footer ---------- */

.site-footer {
  background: var(--navy);
  color: #c9d0de;
  margin-top: 4rem;
  font-size: 0.9rem;
}

.site-footer .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.25rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.site-footer h4 {
  font-family: var(--font-head);
  color: #ffffff;
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin: 0 0 0.75rem;
}

.site-footer p { color: #c9d0de; margin: 0 0 0.5rem; }

.site-footer a { color: #b6a6f8; text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }

.site-footer .credit {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  text-align: center;
  padding: 1rem;
  font-size: 0.8rem;
  color: #8c97ad;
}

/* ---------- responsive ---------- */

@media (max-width: 720px) {
  .nav { flex-wrap: wrap; gap: 0.75rem 1.25rem; }
  .nav-links { margin-left: 0; gap: 1.1rem; flex-wrap: wrap; }
  .goals, .people-grid, .site-footer .inner { grid-template-columns: 1fr; }
  .cohort .people-grid { grid-template-columns: 1fr 1fr; }
  .event-list li { flex-wrap: wrap; }
  .hero { padding-top: 2.5rem; }
  table.participants td.events { display: none; }
  table.participants th.events { display: none; }
}